[FIXED] Family Tree and "Step" relationships broken

Any update on this? I have a lot of step siblings around all the families and the tree is all broken like yours. 

I've got this too on my family with a lot of messy relationships. Had someone die that was apparently family, so tried to find them in the tree and saw it was missing several branches

I just spent the past 12 hours trying to troubleshoot this issue. I repaired the game, removed all mods, did 50/50, backed up, restored, new save—all for naught. This problem looks like it occurred sometime between Sunday and Monday. Ever since that update from Origin, I have noticed broken lines and greyed out LIVING—not dead—Sims in my family trees. I even had invisible sims visiting homes. 

I have a game save with a 10 generation family with the same thing going on, thankfully I have just finished playing that save.  At this point it only has one brake in the branches and I don't think any missing Sims, but at one point when I transferred the MCCC Gedcom file to a genealogy file to another program I had over 650 relations!  So I may have lost some and not noticed.  I did have even more broken branches at different stages of the play through.  And I have been playing it for a short while with all mods out after an update and the broken links were there then too.

Has there been any update on this? I have no step-relationships in my game and I'm experiencing the same bug as well. 

My recently created sim married someone that already had 2 children, so I'm definitely seeing weirdness in the family trees. If I check my created sim it only shows his wife and their 3 girls they've had together, but no step-children shown for him at all. However, if I select either of his step-children and look at their family trees it shows my sim and he's listed as their step-father.

Also when I look at the relationships between the children, that's messed up too. When I select any of my sim's 3 girls and look at their family trees, it lists what should be their half-brother and half-sister as just brother and sister. If I select the half-brother or half-sister and see their family trees, it properly lists my sim's 3 girls as their half-sisters.

The Sim Profile also doesn't list proper relationships. If I select my sim and view either of his step children's profiles there is no mention of them being related at all, and it's the same when looking at my sim's profile with either of the step children selected. Then when it comes to the children's relationships in the Sim Profiles, the ones that should say step-brother or step-sister just say brother and sister though maybe that's by design?

By the way I'm playing on the Xbox One which means no mods, and I also don't have a single pack installed which means just the base game. It's not a big deal to me, heck I didn't even realize things were messed up until seeing this topic and then checking my game, though it would be nice to see the game properly acknowledge that all the sims in my family are actually family.

Any updates? This is getting ridiculous. Now I have the infinite loading circle of death whenever I click on anyone’s family tree. 🤬

I too have had this problem, so I've given up with legacy and genealogy.  I just have to let them be.  I have had to cheat relationships to stop in-laws hitting on each other.  Even a child and it's father were developing a romance bar!  Grrrr!  Sickening!

Do we know is anyone from EA is dealing with this? For my game is family tree essencial and I dont want to update my game until then. It is ridiculous to not update my game several months because of mistakes in game! I even cannot buy another packs.